• 한국초지조사료학회지
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• 제15권4호
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• pp.274-278
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• 1995

This experiment was conducted to know what does the cutting date have an effect on the chemical composition and nutritive yield of Miscanthus sinensis, in order to determine the optimum cutting date of the plant when it is utilized as roughage. Miscanthus sinensis growing natively in the summit of Sam Ak mountain(550m above sea level) was cut at 10 days intervals from 25 July to 15 October, 1988. Plant length and dry matter contents were generally increased with delayed cutting date. Crude protein contents of the plant cut on 5, 15, and 25 of September were 5.5, 5.2 and 5.1%, respectively. Cmde fiber contents was similar with cutting treatment and averaged 35.6%. Cmde protein yield was higher in September than in other cutting date. Yield of crude fiber were 8.3, 9.3 and 9.3t/ha on 5, 15 and 25 September, respectively. Ratio of Cmde protein yield to Crude fiber yield on 5 September tended to be higher than on 15 September and 25 September. These results suggest that the optimum cutting date of the Miscanthus sinensis for good quality forage seems early September.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.75-75
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• 2017

Rye is cultivated on about 30,000ha domestically for forage and green-manure production in Korea. 'Daegokgreen' has been developed as a good quality rye cultivar for forage and green-manure, which was doubled-chromosome by colchicine treatment of diploid rye cultivar 'Gogu' in 2010. By the colchicine treatment with 0.05% for 12 hours at $2^{nd}$ leaf stage of 'Gogu', 31 tetraploid plants were obtained and they produced 2,470 seeds with 135 spikes. There was 4.4 in the number of spikes per plant, 18.3 in grain number per spike, and 37.6 g in the1,000-grain weight. The heading date of 'Daegokgreen' was April 11, which was two days later on average compared with 'Gogu'. The biomass (fresh weight) of 'Daegokgreen' was 3,701kg, which was similar to 'Gogu'. The average crude protein content of 'Daegokgreen' was 8.9%, which was 1.0% point higher than 'Gogu'. 'Daegokgreen' was found to be strong resistant to winter-kill and can be adapted to before maize cultivation.

• Asian-Australasian Journal of Animal Sciences
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• 제23권6호
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• pp.719-723
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• 2010

Ingestion of forage containing a large quantity of soluble oxalate can result in calcium deficiency and even death of livestock. Fertilization is one of the most practical and effective ways to improve yield and nutritional quality of forage. An experiment was conducted to determine the effects of nitrogen (N) fertilization (150, 300 and 600 kg/ha) across varying levels (150, 300 and 600 kg/ha) of potassium (K) on oxalate accumulation in napiergrass (Pennisetum purpureum). Application of N at 300 kg/ha produced higher dry matter yield than at 150 or 600 kg/ha, while K fertilization had no effect on yield. In general, N fertilization did not affect the soluble and total oxalate contents, but slightly affected the insoluble oxalate content. Soluble oxalate content showed an increasing trend and insoluble oxalate content showed a decreasing trend with increasing K level, but total oxalate content remained relatively constant. There were significant interactions between N and K fertilization for the content of soluble and insoluble oxalate fractions. The greatest increase in soluble oxalate content with N level at 300 kg/ha was found at the high level (600 kg/ha) of K application. The greatest increase in insoluble oxalate content with N level at 600 kg/ha was found at the low level (150 kg/ha) of K application. These results indicated the possibility of controlling the content of soluble and insoluble oxalate fractions in forage by fertilization.

• 한국초지조사료학회지
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• 제11권1호
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• pp.30-37
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• 1991

This experiment was conducted to determine optimal sowing date and method of Italian ryegrass(Lo1iuwr wzultiflorum. Tetrone) in paddy of Gyeong Nam area. Treatments given were four sowing dates(Sep. 30, Oct. 10, Oct. 20 and Oct. 30) and four sowing methods (broadcasting on tillage ridging, broadcasting on zerotillage ridging, boundless broadcasting and alternated drilling). The characteristics of growth, winter survival, yield(fresh and dry matter) and nutr~ent quality were observed. The results obtained are summarized as follows: 1. Winter survival and yield components such as plant height, and number of stem were the highest due to higher survival tillers at the sown time of Sep. 30(p<. 05). 2. Plants sown on Sep. 30 showed the highest fresh and dry matter yield. Yield was decreased as delaying the date of sowing. Fresh and dry matter yield sown on Oct. 10, were obtained 7600 and 1100 kg, respectively, aftenvardly sign~ficantly decreased(p< .05). 3. Effect of sowing time and method on chemical composition were not recognized. 4. Winter surviva: sown on boundless-broadcasting was lower(p<. 05) than those of sown on broadcasting on ridging and alternated-drilling. 5. Fresh and dry matter y~elds were the highest when sown on broadcasting on tillage ridging but that of sown on houndless-broadcasting was relatively low. 6. The growth and forage yield were enhanced by sowing up to Oct. 10 and by sown on broadcasting on ridging (tillage or zerotillage).

• 한국초지조사료학회지
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• 제16권4호
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• pp.267-274
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• 1996

This experiment was carried out to investigate the effect of pasture types(mixture and mono tall fescue pasture) and endophyte infection on the animal behavior of Korean native cattle at the Experimental Field of Grassland and Forage Crops Division, National Livestock Research Institute, Suweon, in 1994. The results obtained are sumunarized as follows: DM intake of Korean native cattle was increased with mixture and endophyte-free tall fescue for both pasture types. Mixture and endophyte-free tall fescue showed good animal preference. Daily grazing time was increased with mixture and endophyte-free tall fescue in monoculture, while annual grazing period was increased with monoculture and endophyte-infect tall fescue. Amount of drinking water of Korean native cattle was increased with tall fescue monoculture rather than mixture, however the amount of drinking water was higher with endophyte-infect tall fescue in monoculture. Salt intake of Korean native cattle was increased with mixture and endophyte-6ee tall fescue in monoculture. Rectal temperature of Korean native cattle was not influenced by pasture types and endophyte infection. Based on the results of this experiment, DM intake of Korean native cattle and daily grazing time were increased by mixture and endophyte-free tall fescue with good quality.

• 한국초지조사료학회지
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• 제12권2호
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• pp.123-126
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• 1992

남부지방에 적합한 청예사초용 율무의 파종적기를 구명코자 다수성으로 인정된 승주 재래종을 공시하여 시험했던 바 그 결과를 요약하면 다음과 같다. 1. 초장, 경태, 엽수 등의 수량 구성형질은 4월 15일에 파종한 구가 가장 우수하였다. 2. 생초수량과 건물수량은 역시 4월 15일에 파종한 구가 증수되었다. 3. 조단백질 함량은 파종기가 늦어질수록 높았고 NDF, ADF 등의 조섬유 함량은 파종기가 늦어질수록 저하되었다.

• 한국초지조사료학회지
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• 제10권2호
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• pp.96-101
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• 1990

This field experiment was undertaken to find out the effect of grazing and cutting management on the forage quality and soil hardness at different legumes sown swards of the experimental field of Livestock Experiment Station in Suweon, from August 1985 to October 1988. The results obtained are as follows: 1. Crude protein, crude fat and ash contents under grazing were higher than these under cutting, but showed the reverse results in crude fiber and nitrogen free extracts contents. Average in vitro dry matter digestibility (IVDMD) under grazing (72 %) was a little higher than that under cutting (71 %). On the other hand, there was little difference among the mixtures swards in mineral contents and IVDMD. 2. The contents of Ca, P and Mg were a little high in the cutting, but K and Na contents were in gazing. Ca: P ratio in grazing (2.97) was slightly higher than that of cutting (2.94). 3. Production of energies(TDN, StE and NEL) with cutting were appeard to increase by 19.4 %, 13.5 %and 19.0 % than those of grazing, respectively. Mixtures swards including alfalfa showed more production both grazing and cutting. 4. Soil hardness in the top lOcm of soil by cattle grazing was changed from 15.5mm at startihg year to 22.6 mm after 3 years, but in cutting slightly increase from 15.5mm to 16.2mm. Generally it was low in early spring and high in autumn.

• 한국초지조사료학회지
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• 제11권4호
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• pp.258-263
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• 1991

현재 축산업협동조합중앙회가 권장하는 수단그라스계 잡종의 장려품종은 10종이 있으나 이들은 동일한 환경조건하에서 함께 평가된 일이 없다. 따라서 본 시험은 수원소재 서울대 농대의 사초시험포장에서 2년간에 걸쳐 수단그라스계 잡종의 축협장려품종에 대한 사초수량과 사료가치를 비교하기 위하여 수행되었다. 10종의 공시품종중 G83F 및 NC$^{+}$855는 조생품종으로 분류되었으며 Pioneer 988 및 Sordan 79는 다른품종에 비하여 잎마른병에 강하였다. Jumbo, Sordan79 및 SX-17 품종은 도복이 많이 되었다. 사초의 건물수량에 있어서는 공시품종간에 유의적인 차이가 없었다. 그러나 Pioneer 988, TE-Haygrazer 및 G83F는 1989년에 다른 품종보다 수량이 좀 높았고 NC$^{+}$855 및 Pioneer 988은 1990년에 높았다. 1990년에 조사된 공시품종간의 CP, ADF, NDF 및 RFV에 있어서는 큰 차이가 없었다. 그러나 3회 수확시 수단그라스계 잡종의 ADF, NDF 및 RFV는 1회 및 2회 수확시보다 높았다. 결론적으로 말하면 축협장려품종인 10종의 수단그라스계 잡종간에는 사초수량에 있어서 차이가 없다고 할 수 있다

• Journal of Animal Science and Technology
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• 제57권3호
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• pp.14.1-14.7
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• 2015

A feeding trial was carried out to determine the effects of chromium methionine (Cr-Met) chelate and forage level over two years, $1^{st}$ fattening and $2^{nd}$ fattening period on growth parameters, carcass characteristics and blood metabolites of 46 Korean native (Hanwoo, Bos Taurus, $BW=183{\pm}44kg$) steers. Treatments were: 1) Steers in the low forage (LF) group were fed diets that consisted of 60% concentrate and 40% forage; 2) Steers in the high forage (HF) group were fed diets that consisted of 40% concentrate and 60% forage. Following the $1^{st}$ fattening period, steers ($BW=480{\pm}37.6kg$) were randomly assigned to four treatment groups: LF (40 F plus no Cr-Met supplementation in the $2^{nd}$ fattening period), LFCM (40LF plus added 400 ppb of Cr-Met during the $2^{nd}$ fattening period), HF (60 F plus no added Cr-Met during the $2^{nd}$ fattening period) and HFCM (60 F plus added 400 ppb of Cr-Met in the $2^{nd}$ fattening period). Dry matter intake of the treatment diets did not differ during the raising and $1^{th}$ fattening period (P > 0.05). The ADG in the raising period showed no difference between the 40 F and 60 F groups (P > 0.05). Carcass characteristics including rib-eye area and meat yield index were higher in HF than the other treatment groups (P < 0.05). The HF group tended to show a higher (P = 0.08) marbling score than the LF group whereas the HFCM group showed a higher marbling score than the LFCM group (P < 0.05). HDL was higher and LDL lower in groups fed with Cr-Met than in other groups whereas glucose showed the lowest value in HF group (P < 0.05). Triglyceride (TG), Cholesterol, PUN and total protein (TP) were the same among all treatment groups (P > 0.05). The Insulin concentration in the blood was significantly higher for the HFCM group than for the LF, LFCM and HF groups (P < 0.05). It is concluded that supplementation of chromium-methionine chelate could improve meat quality in beef steers.

• 한국초지조사료학회지
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• 제35권1호
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• pp.36-42
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• 2015

본 연구는 우리나라에서 여름철 조사료자원으로서 난지형목초의 재배 가능성을 검토하고 저 수분 저장 조사료 생산에 적합한 여름철 사료작물을 선발하기 위하여 난지형목초의 생육특성, 사초 생산성 및 사료가치를 평가하기 위하여 충남 천안에서 2013년 5월부터 2014년 12월까지 수행하였다. 난지형 화본과 목초인 버뮤다그라스 "Tifton 85", "Cheyenne II", "Mohawk" 3품종, 테프그라스 "Tiffany", "Emerald" 품종과 클라인그라스 "Selection 75" 품종을 매년 5월말부터 6월 초순 사이에 파종하였다. 버뮤다그라스와 클라인그라스의 출현 소요일은 파종 후 11~12일 정도 소요되었으며 테프그라스는 파종 후 2일정도 소요되는 것으로 나타났다. 버뮤다그라스는 시험기간 동안 전혀 출수가 이루어지지 않았으며, 테프그라스는 7월 10일경, 클라인그라스는 7월 24일경에 출수기에 도달하였다. 난지형 목초의 사초생산성은 버뮤다그라스 Tifton 85 품종의 건물 및 TDN 수량이 각각 13,159, 7,764 kg/ha으로 가장 높게 나타났으며 테프그라스가 가장 낮은 것으로 나타났다. NDF와 ADF 함량은 초종 간에 큰 차이가 나타나지 않았으며, 단백질 함량은 버뮤다그라스가 평균 11.5%로 난지형 목초중 가장 높게 나타났다. 총 가소화영양소(TDN) 함량은 테프그라스 Tiffany 품종이 63.6%로 가장 높게 나타났으며 in vitro 건물소화율은 초종 간에 큰 차이를 보이지 않았다. 이상의 결과를 종합해보면 우리나라에서 여름철 조사료 자원으로 난지형 목초의 재배 및 이용 가능성이 충분하였으며, 월동이 가능한 제주도와 남부지방에서는 영년생 방목초지용으로 활용성이 높고, 월동이 불가능한 중북부 지역에서는 1년생 여름철 사료작물로 이용하는 것이 우리나라에서 난지형 목초를 효율적으로 이용할 수 있는 방법으로 사료된다.